Hub for a brake booster



FIG. 1 is a front perspective view of a hub for a brake booster showing our new design;

FIG. 2 is a rear perspective view of the hub for a brake booster of FIG. 1;

FIG. 3 is a top view of FIG. 1;

FIG. 4 is a bottom view of FIG. 1;

FIG. 5 is a front elevation view of FIG. 3; and,

FIG. 6 is a rear elevation of FIG. 3. 

The ornamental design of a hub for a brake booster, as shown and described. 